Novel wiper motor

Abstract

The utility model relates to a novel wiper motor which comprises a motor body and a reduction gearbox, a gearbox shell of the reduction gearbox comprises a main shell body and a gearbox cover, a plurality of bolt connecting lugs are formed on the periphery of an opening of an assembly cavity of the main shell body, and the gearbox cover is covered after a rubber sealing washer is arranged at the opening end of the assembly cavity of the main shell body in a cushioned mode. The box cover is fastened on the main shell through a bolt, a positioning convex column located on the side of a connecting bolt hole in a bolt connecting lug protrudes on the end face of the bolt connecting lug of the main shell, a positioning hole is formed in the rubber sealing gasket, a positioning concave part is arranged on the box cover, and the positioning convex column penetrates through the positioning hole and is inserted into the positioning concave part. The device has the advantages of convenience and reliability in positioning the rubber sealing gasket and high assembly efficiency of the reduction gearbox shell.

Description

Technical Field

[0001] The utility model relates to a windshield wiper motor. Background Art

[0002] At present, the wiper motor used on vehicles usually includes a motor body and a reduction box. The barrel shell of the motor body is connected to the case shell of the reduction box. The case shell of the reduction box includes a main shell and a case cover. A rubber sealing gasket is arranged between the open end surface of the main shell and the case cover to achieve waterproof sealing of the reduction box case. However, the rubber sealing gasket relies on bolt holes for bolts to pass through to achieve positioning, which has the defect of inconvenient positioning. During the assembly process, the rubber sealing gasket is prone to skew, and the bolt holes on the rubber sealing gasket do not correspond to the bolt connection holes on the case shell, which not only affects the assembly efficiency, but also easily causes damage to the rubber sealing gasket during the process of tightening the bolts. Summary of the invention

[0003] The purpose of the utility model invention is to overcome the defects of the prior art and provide a new type of wiper motor with a rubber sealing pad that is convenient and reliable to position.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel wiper motor comprises a motor body and a reduction box, wherein the housing of the reduction box comprises a main housing and a housing cover, wherein a plurality of bolt connection ears are formed on the outer peripheral edge of the opening of the assembly cavity of the main housing, a rubber sealing gasket is placed at the opening end of the assembly cavity of the main housing and the housing cover is closed, and the housing cover is fastened to the main housing by bolts, and is characterized in that: a positioning boss protrudes on the end surface of the bolt connection ear of the main housing and is located on the side of the connecting bolt hole on the bolt connection ear, a positioning hole is provided on the rubber sealing gasket, and a positioning recess is provided on the housing cover, and the positioning boss passes through the positioning hole and is inserted into the positioning recess.

[0006] Preferably, the positioning recess is a concave hole groove with a closed bottom.

[0007] Preferably, the end face of the bolt connecting ear is stepped, having a base surface flush with the opening end face of the assembly cavity and a boss surface higher than the base surface, the bolt connecting hole on the bolt connecting ear is arranged at the junction of the base surface and the boss surface, the rubber sealing gasket is arranged on the base surface, the rubber sealing gasket has a recess adapted to the hole contour on the base surface corresponding to the bolt connecting hole, the rubber sealing gasket is higher than the boss surface in a free state, and the box cover is supported on the boss surface after being tightened by bolts.

[0008] Preferably, the outer periphery of the rubber sealing gasket is folded downward to form an outer positioning flange that matches the edge contour of the main shell.

[0009] Preferably, the inner circumferential surface of the rubber sealing gasket is folded downward to form an inner flange that matches the inner edge of the main shell assembly cavity, and the inner flange is a continuous ring.

[0010] By adopting the above technical scheme, the design of the positioning boss cooperates with the positioning hole on the rubber sealing gasket and the positioning recess on the box cover to achieve reliable positioning, making the assembly operation of the box shell simpler and more efficient. At the same time, the outer positioning flange and the inner flange not only facilitate the pre-positioning of the rubber sealing gasket on the main shell, but also effectively improve the waterproof sealing performance; the design of the convex table surface achieves good support for the cover plate.

[0011] The utility model is further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of the new wiper motor of the utility model;

[0013] Figure 2 This is an exploded view of the wiper motor of the utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the main housing of the utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the rubber sealing gasket of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the box cover of the utility model. DETAILED DESCRIPTION

[0017] See attached Figures 1 to 5 The utility model discloses a new type of wiper motor, including a motor body and a reduction box. The box shell of the reduction box includes a main shell 1 and a box cover 2. The main shell 1 is formed with a plurality of bolt connection ears 11 along the outer periphery of the assembly cavity opening. A rubber sealing gasket 3 is placed on the opening end of the assembly cavity of the main shell 1 and the box cover 2 is covered. The box cover 2 is fastened to the main shell 1 by bolts. A positioning boss 112 is protruded on the end surface of the bolt connection ear 11 of the main shell 1 and is located on the side of the connecting bolt hole 111 on the bolt connection ear 11. A positioning hole 31 is provided on the rubber sealing gasket 3. A positioning recess 21 is provided on the box cover 2. The positioning boss 112 passes through the positioning hole 31 and is inserted into the positioning recess 21. The positioning recess 21 is a concave groove with a closed bottom, so as to cover the positioning boss and improve the waterproof performance. Of course, those skilled in the art can also think of directly setting the positioning recess as a through hole. The position and number of the positioning bosses can be adjusted as needed.

[0018] In this specific embodiment, the end face of the bolt connection ear 11 is stepped, having a base surface 113 flush with the end face of the assembly cavity opening and a boss surface 114 higher than the base surface 113. The bolt connection hole 111 on the bolt connection ear 11 is arranged at the junction of the base surface 113 and the boss surface 114. The rubber sealing gasket 3 is cushioned on the base surface 113. The rubber sealing gasket 3 has a recess 32 that is adapted to the hole contour on the base surface 113 corresponding to the bolt connection hole. The rubber sealing gasket is higher than the boss surface 114 in a free state, and the box cover 2 is supported on the boss surface 114 after being tightened by bolts.

[0019] In order to further improve the positioning of the rubber sealing gasket 3 on the box shell, the outer periphery of the rubber sealing gasket 3 is folded downward to form an outer positioning flange 33 that matches the edge contour of the main shell 1. Due to the limitation of the outer contour of the box shell, the outer positioning flange is usually designed in multiple stages rather than a continuous ring. In addition, an inner flange 34 that matches the inner edge of the assembly cavity of the main shell 1 is folded downward on the inner periphery of the rubber sealing gasket 3, and the inner flange 34 is a continuous ring; this not only achieves a better positioning effect, but also improves the sealing performance and avoids the leakage of the sealing grease inside the reduction box.

[0020] The novel wiper motor of the utility model has the advantages of simple and efficient assembly operation of the reduction box shell and reliable sealing.

Claims

1. A new type of wiper motor, including a motor body and a reduction box, the housing of the reduction box includes a main housing and a housing cover, the main housing is formed with a plurality of bolt connection ears on the outer periphery of the assembly cavity opening, a rubber sealing gasket is placed at the opening end of the assembly cavity of the main housing and the housing cover is covered, and the housing cover is fastened to the main housing by bolts, characterized in that: A positioning boss protrudes on the end surface of the bolt connection ear of the main shell and is located on the side of the connecting bolt hole on the bolt connection ear. A positioning hole is provided on the rubber sealing gasket, and a positioning recess is provided on the box cover. The positioning boss passes through the positioning hole and is inserted into the positioning recess.

2. The novel wiper motor according to claim 1 is characterized in that: The positioning recess is a concave hole groove with a closed bottom.

3. The novel wiper motor according to claim 1 is characterized in that: The end face of the bolt connection ear is stepped, having a base surface flush with the opening end face of the assembly cavity and a boss surface higher than the base surface. The bolt connection hole on the bolt connection ear is arranged at the junction of the base surface and the boss surface. The rubber sealing gasket is arranged on the base surface. The rubber sealing gasket has a recess that is adapted to the hole contour on the base surface corresponding to the bolt connection hole. The rubber sealing gasket is higher than the boss surface in a free state, and the box cover is supported on the boss surface after being tightened by bolts.

4. The novel wiper motor according to claim 1 is characterized in that: The outer periphery of the rubber sealing gasket is folded downward to form an outer positioning flange that matches the edge contour of the main shell.

5. The novel wiper motor according to claim 1 is characterized in that: The inner circumference of the rubber sealing gasket is folded downward to form an inner flange that matches the inner edge of the main shell assembly cavity, and the inner flange is a continuous ring.

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